Hi, we hear multiple report about some players not being able to use consumable. Combat is currently removed and will be fixed/tuned on the latest version.
Thank you soo much for trying the game.
Sorry to hear that but I don't think re-installing will fix the issue. It's possible to beat the mission without any consumable. The trick is to avoid all off the unnecessary confrontation. Other than the big Axe wielding robot and the stage boss, you are not required to kill other ones.
Let me know if that help you beating the first mission